CN100405032C - Film-insulated temperature-sensing probe and its use for determining internaltemperature at cigarette burning - Google Patents
Film-insulated temperature-sensing probe and its use for determining internaltemperature at cigarette burning Download PDFInfo
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- CN100405032C CN100405032C CNB2006100109264A CN200610010926A CN100405032C CN 100405032 C CN100405032 C CN 100405032C CN B2006100109264 A CNB2006100109264 A CN B2006100109264A CN 200610010926 A CN200610010926 A CN 200610010926A CN 100405032 C CN100405032 C CN 100405032C
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Abstract
The present invention discloses a film-insulated temperature-sensing probe and a device used for determining the dynamic internal temperature of burning cigarette by using the probe. The surfaces of a platinum wire (5) and a platinum rhodium wire (6) of the film-insulated temperature-sensing probe are respectively a coated with a film-insulated coating (10). A temperature catching device (1) of the device used for determining the dynamic internal temperature of burning cigarette is provided with a temperature sensing assembly which comprises a fixed temperature sensing probe with a firm structure and a moveable temperature sensing probe. The signal end of the temperature sensing probe is input to the input end set of the A/D converting circuit (8) of the temperature catching device (1), the digital signal is input in a digital signal processor to be processed and transmitted to a control calculator through the A/D converting circuit (8). The film-insulated temperature-sensing probe has the advantages of high measurement accuracy and wide temperature measurement range, and is not affected by middle medium.
Description
Technical field
The invention belongs to tobacco testing apparatus technical field, be specifically related to a kind of dynamic temperature inner cigarette measuring equipment.
Background technology
The cigarette burning temperature is the key factor that influences the cigarette smoke chemical composition, and is closely related to the formation of harmful ingredients in flue gas, the formation of chemical constitution and content in cigarette master, the side-stream smoke is played an important role, and be to influence one of most important parameter of cigarette quality.The dynamic temperature of combustion of mensuration cigarette and inner gas phase temperature thereof are to research cigarette smoke chemical composition, and the objectionable constituent that reduce cigarette have very positive effect.
Phase late 1950s begins that the cigarette burning temperature has been had corresponding research.To the sixties and the seventies, the mensuration of cigarette burning temperature begins to become a relatively active research field.The research article that occurs many relevant cigarette burning Temperature Distribution during this, wherein two pieces of seminal paper influences about the cigarette burning temperature delivering on Nature with RICHARD doctor RBAKER of British American Tobacco are the most extensive, and he has shifted the research work of cigarette burning temperature onto new height.RICHARD R doctor BAKER mentions the equipment that is used to measure the cigarette burning temperature and mainly contains two kinds in the article of delivering on the Nature in 1974 (Temperature distribution inside a burningcigarette), a kind of is to adopt platinum rhodium metal silk to form temperature-sensing probe to measure, and another kind is to adopt infrared technique to measure.Use platinum rhodium metal silk to form temperature-sensing probe and be short-circuited between two one metal wires, want fill insulant between the tinsel for avoiding.For example isolate platinum rhodium metal silk with quartz ampoule, this is to measure cigarette burning temperature method relatively more commonly used abroad.But this kind method is insensitive to thermotonus, inaccurate because the obstruct of quartz ampoule causes temperature-sensing probe directly to touch point for measuring temperature; And cause operation not easy because quartz ampoule is frangible.And the filling insulating material of using other can cause the volume of temperature-sensing probe bigger between tinsel, and is also insensitive to the variation of temperature reaction, inconvenient operation.Using infrared equipment to measure the cigarette burning temperature is to be used for the most frequently used method of porous road smoking aircraft measurements cigarette burning temperature at present abroad.It is a kind of simulated determination that but the infrared technique principle has determined infrared equipment to measure temperature, is direct contact measurement thing unlike temperature-sensing probe, but measures according to the infrared energy of material self radiation, and this has very big error when just making infrared equipment measure temperature.And infrared equipment can only the surface measurements temperature, measures thickness≤10 μ m because of it, can not directly measure internal temperature.Axle center temperature when the surface temperature of therefore using infrared equipment can only measure the cigarette burning awl can't accurately be measured cigarette burning.
External in cigarette, use patent report that temperature-sensing probe measures temperature seldom.Patent GB2369493, report be to utilize temperature-sensing probe control temperature to preserve cigar.In the tobacco documents and materials in the 60 to 70's, report is arranged and use temperature-sensing probe to measure the cigarette temperature.(1. Touey, G.P.and Mumpower II, R.C.Tobacco Sci.1,33 (1957). 2. Adams, P.I.Tobacco Sci.12,144 (1968). 3. Muramatsu, M.Obi, Y.Fukuzumi, T.and Keii, T.J.agric.chem..Soc.Japan, 46,569 (1972). 4. Baker, R.R.and Kibum, K.D.Beitr.Tabakforsch.7,79 (1973) .) domestic research to the cigarette burning temperature seldom, the mensuration to temperature of combustion has Shanghai Tobacco's technique center Zheng Saijing at present, what people such as Liu Baizhan delivered isolates the temperature-sensing probe measurement inner cigarette temperature that platinum rhodium metal silk is formed with quartz ampoule (the mensuration mode identical with external employing).And they use AGEMA SC3000 thermal infrared imager high-resolution, quick record that the cigarette burning temperature is measured.But on the whole, do not see as yet that for the dynamic measurement research of cigarette burning temperature is domestic patent report is arranged.It is insensitive to thermotonus to the present invention is directed to existing platinum rhodium metal silk temperature-sensing probe, and inaccurate deficiency through concentrating on studies, has been developed a kind of film-insulated temperature-sensing probe, and it is respond well to be used to measure dynamic temperature of combustion of inner cigarette and gas phase temperature.
Summary of the invention
The object of the present invention is to provide a kind of dynamic temperature inner cigarette measuring equipment.
The object of the present invention is achieved like this: comprise temperature drip catcher, temperature-sensing probe, signal processor, first analog to digital conversion circuit and second analog to digital conversion circuit and control computer, wherein be installed in fixedly temperature-sensing probe and movable temperature-sensing probe on the temperature drip catcher, the first analog to digital conversion circuit input signal processor of its output signal in the temperature drip catcher carries out signal Processing, is transferred to control computer through second analog to digital conversion circuit again; All temperature-sensing probes form by platinum filament and the electric connection of platinum-rhodium wire one end; described platinum filament and platinum-rhodium wire surface applied high-temperature resistant membrane insulating coating; the postmedian of described fixedly temperature-sensing probe is provided with the protection porcelain tube; the middle part of described movable temperature-sensing probe is provided with flexible high-temperature insulation sheath, and the rear portion is provided with the protection porcelain tube.
Because the application of film-insulated temperature-sensing probe, make thermometric sensitivity improve, dynamically adopt computer-controlled signal output and analog to digital conversion circuit, reception is handled from the signal of temperature-sensing probe and dynamic temperature-sensing probe, the feasible temperature of combustion that can obtain inner cigarette, can obtain the surface temperature of dynamic burning awl again simultaneously, and can obtain the dynamic temperature inner that full cigarette props up whole combustion phases, be convenient to performance analysis is carried out in the variation of cigarette burning chemical constitution, with control, adjustment quality of cigarette, increase economic efficiency.
Description of drawings
The present invention is further illustrated below in conjunction with accompanying drawing and embodiment, but never in any form the present invention is limited.
Fig. 1 is the film-insulated temperature-sensing probe inner structure of a present invention synoptic diagram;
Fig. 2 is the movable film-insulated temperature-sensing probe inner structure synoptic diagram of the present invention;
Fig. 3 is a present device structural relation synoptic diagram;
Fig. 4 is the cigarette burning temperature dynamic thermometric figure of three temperature-sensing probe configuration devices;
Fig. 5 is the cigarette burning temperature dynamic thermometric figure of ten temperature-sensing probe configuration devices;
Fig. 6 is the cigarette burning temperature dynamic thermometric figure of 15 temperature-sensing probe configuration devices;
Fig. 7 is that movable temperature-sensing probe is to cigarette burning district temperature dynamic thermometric figure.
Embodiment
As shown in Figure 1-Figure 3, dynamic temperature inner cigarette measuring equipment of the present invention, comprise temperature drip catcher 1, temperature-sensing probe, signal processor 4, first analog to digital conversion circuit 18 and second analog to digital conversion circuit 28 and control computer 9, wherein be installed in fixedly temperature-sensing probe 2 and movable temperature-sensing probe 7 on the temperature drip catcher 1, first analog to digital conversion circuit 18 input signal processors 4 of its output signal in temperature drip catcher 1 carry out signal Processing, are transferred to control computer 9 through second analog to digital conversion circuit 28 again; All temperature-sensing probes form by platinum filament 5 and the electric connection of platinum-rhodium wire 6 one ends; described platinum filament 5 and platinum-rhodium wire 6 surface applied high-temperature resistant membrane insulating coatings 10; the postmedian of described fixedly temperature-sensing probe is provided with protection porcelain tube 3; the middle part of described movable temperature-sensing probe is provided with flexible high-temperature insulation sheath 11, and the rear portion is provided with protection porcelain tube 3.
Described high-temperature insulating paint is the high-temperature insulation coating of ceramic-like, compound resin class or organo-fluorine polymer class.
Described fixedly temperature-sensing probe 2 is 3-15, and movable temperature-sensing probe 7 is 2.
Described fixedly temperature-sensing probe 2 is 8-10, and movable temperature-sensing probe 7 is 2.
Described fixedly temperature-sensing probe 2 is 10, and movable temperature-sensing probe 7 is 2.
As embodiment, the present invention can adopt 3 fixedly temperature-sensing probe can measure the temperature of combustion and the gas phase temperature of a cigarette head end, middle-end, three points in bottom, can reflect the dynamic change of air-flow substantially in inner cigarette.Adopt 15 fixedly temperature-sensing probe can measure the temperature of combustion of a cigarette and inner dynamic gas phase temperature more all sidedly, but because the fixedly increase of temperature-sensing probe quantity, to the destructiveness increase that cigarette props up state, the error in the mensuration process will increase.Therefore best mensuration combining and configuring be adopt 10 fixedly temperature-sensing probe add 2 movable temperature-sensing probes, not only can measure the temperature of combustion and the internal dynamic gas phase temperature of cigarette comprehensively, the temperature of dynamic monitoring cigarette optional position, and it is little that cigarette is propped up the influence of state.
Practical measuring examples:
Table 1 is a relation between temperature-sensing probe quantity and the RSD value.
| Temperature-sensing probe | Standard deviation RSD |
| 1 | 0.629593 |
| 2 | 1.180189 |
| 3 | 1.469848 |
| 4 | 2.421215 |
| 5 | 0.880645 |
| 6 | 0.502998 |
| 7 | 1.162882 |
| 8 | 0.733599 |
| 9 | 0.839927 |
| 10 | 0.629593 |
Measuring condition: the present invention is provided with 10 temperature-sensing probes, is 22 ± 1 ℃ in temperature, and humidity is to measure temperature 15 minutes in 60 ± 2% the constant-temperature constant-humidity environment, measures the back that finishes and by computing machine data is carried out subsequent treatment.
Interpretation of result: the temperature measuring data to 10 temperature-sensing probes 2 carries out the analysis of RSD value, and analysis result sees Table 1.As can be seen, the relative standard deviation RSD value of 10 temperature-sensing probes is all less than 5%, and it has reflected the measurement result precision height of film-insulated temperature-sensing probe of the present invention, favorable reproducibility.
Fig. 4 is the cigarette burning temperature dynamic thermometric figure of three temperature-sensing probe configuration devices.
Measuring condition: dispose 3 temperature-sensing probes, RM1/PLUS smoking machine (borgwaldt technik), certain brand article cigarette selects weight range and prop up at the qualified cigarette of 0.94 ± 0.01g, and 22 ± 1 ℃ of temperature, balance is 48 hours under humidity 60 ± 2% conditions.
Measuring method: apart from the insertion point of cigarette Zhi Shuisong paper 5mm place line as last temperature-sensing probe, 3 temperature-sensing probes are inserted cigarette to be propped up, the degree of depth is the radius of cigarette Zhi Yuanzhou, opens smoking machine and lights cigarette, opens temperature measuring device measuring cigarette simultaneously and props up temperature of combustion and axle center gas phase temperature.After treating that cigarette smoking finishes, data are carried out subsequent treatment by computing machine.
As seen from Figure 4,3 temperature-sensing probes are reflected in the gas phase temperature that in cigarette smoking and the smoldering process cigarette is propped up three differences on the internal axis, general description the dynamic change of inner cigarette of air-flow in burning.Cigarette maximum temperature in the process of burning and sucking is 645 degree as can be seen.
Fig. 5 is the dynamic temperature measurement figure of the cigarette burning temperature of ten temperature-sensing probe configuration devices.
Measuring condition: dispose 10 temperature-sensing probes, RM1/PLUS smoking machine (borgwaldt technik), certain brand article cigarette selects weight range and prop up at the qualified cigarette of 0.94 ± 0.01g, and 22 ± 1 ℃ of temperature, balance is 48 hours under humidity 60 ± 2% conditions.
Measuring method: apart from the insertion point of cigarette Zhi Shuisong paper 5mm place line as last temperature-sensing probe, 10 temperature-sensing probes are inserted cigarette to be propped up, the degree of depth is the radius of cigarette Zhi Yuanzhou, opens smoking machine and lights cigarette, opens temperature measuring device measuring cigarette simultaneously and props up temperature of combustion and axle center gas phase temperature.After treating that cigarette smoking finishes, data are carried out subsequent treatment by computing machine.
As seen from Figure 5,10 temperature-sensing probes are reflected in the gas phase temperature that in cigarette smoking and the smoldering process cigarette is propped up the internal axis difference, and the dynamic change of air-flow in the inner cigarette of burning has been described.Cigarette maximum temperature in the process of burning and sucking is 700 degree as can be seen.
Fig. 6 is the dynamic temperature measurement figure of the cigarette burning temperature of 15 temperature-sensing probe configuration devices.
Measuring condition: dispose 15 temperature-sensing probes, RM1/PLUS smoking machine (borgwaldt technik), certain brand article cigarette selects weight range and prop up at the qualified cigarette of 0.94 ± 0.01g, and 22 ± 1 ℃ of temperature, balance is 48 hours under humidity 60 ± 2% conditions.
Measuring method: apart from the insertion point of cigarette Zhi Shuisong paper 2mm place line as last temperature-sensing probe, 15 temperature-sensing probes are inserted cigarette to be propped up, the degree of depth is the radius of cigarette Zhi Yuanzhou, opens smoking machine and lights cigarette, opens temperature measuring device measuring cigarette simultaneously and props up temperature of combustion and axle center gas phase temperature.After treating that cigarette smoking finishes, data are carried out subsequent treatment by computing machine.
As seen from Figure 6, because temperature-sensing probe quantity increases to 15, we select the insertion point of last temperature-sensing probe apart from cigarette Zhi Shuisong paper 2mm place, and first temperature-sensing probe is apart from cigarette Zhi Dingduan 5mm, and therefore 15 temperature-sensing probes data of measuring have reflected the gas phase temperature that in a cigarette smoking and the smoldering process cigarette is propped up the internal axis difference substantially.Because first temperature-sensing probe props up head end 5mm apart from cigarette, the range points firearm is near excessively when lighter lights a cigarette, and the initial temperature that measured by first temperature-sensing probe of temperature effect of lighter is 330 degree, burns and sucks that maximum temperature is 819 degree in the process.
The dynamic temperature measurement figure that movable temperature-sensing probe was done cigarette burning district temperature when Fig. 7 showed the four-hole suction.
Measuring condition: dispose 2 movable temperature-sensing probes, RM1/PLUS smoking machine (borgwaldt technik), certain brand article cigarette is selected weight range and is propped up at the qualified cigarette of 0.94 ± 0.01g, and 22 ± 1 ℃ of temperature, balance is 48 hours under humidity 60 ± 2% conditions.
Measuring method: smoking cigarette under standard conditions, select four-hole when suction check point as cigarette burning district temperature.Burning linear distance cigarette propped up head end 16 ± 1mm when the four-hole suction began according to the observation, prop up the gauge point of head end 16mm place line at the distance cigarette as the burning line, after waiting to light cigarette, utilize manual mode to adjust cigarette and begin the four-hole suction at the mark line place, and measure the gas phase temperature that cigarette props up the combustion zone difference at diverse location, the different depth insertion activity temperature-sensing probe of range mark line.After treating that cigarette smoking finishes, data are carried out subsequent treatment by computing machine.
The position of burning line is decided to be 0 point of transverse axis among Fig. 7, and the distance that the burning line is left in burning line back is decided to be negative value, the distance that the burning line is left in burning line front be decided to be on the occasion of.Maximum temperature in the aspiration procedure occurs in 3～4mm before the burning line, is the center of burning awl.Temperature Distribution among Fig. 7, image have been reacted the Temperature Distribution situation of the diverse location of distance burning line.
Characteristics of the present invention:
1, platinum of the present invention-platinum-rhodium alloy type temperature-sensing probe is one of industrial the most frequently used detector unit. Owing to adopted the film-insulated traditional sleeve insulation that replaced. Not only guaranteed the insulating properties of platinum rhodium temperature-sensing probe but also direct contact thermography point, on the not impact of being quick on the draw property of variations in temperature, and volume is little easy and simple to handle. Certainty of measurement is high, is not subjected to the impact of intermediate medium, and the temperature range of measuring is wide.
2, movable temperature-sensing probe can be in cigarette smoking and smoldering process the gas phase temperature of optional position at random the mensuration cigarette. Be convenient to dynamic monitoring is carried out in position, arbitrfary point in the cigarette burning process. Simultaneously movable temperature-sensing probe also can be at the gas phase temperature of measuring surrounding environment in the process that burns and sucks of cigarette, and the stability of environment temperature is detected. And by the testing result of environment temperature is calibrated the cigarette burning temperature, get rid of the impact of environmental condition as far as possible.
3,3 to 15 temperature- sensing probes 2 and 2 movable temperature-sensing probes 7 are arranged on the temperature trap, various combination mode according to temperature-sensing probe, both can measure the axle center gas phase temperature of the inner diverse location of synchronization cigarette in cigarette smoking and the smoldering process, capable of dynamic is measured the axle center gas phase temperature of a cigarette in suction and smoldering process again. The whole combustion process of cigarette is carried out dynamic temperature measurement, and the reflection air-flow helps to verify the variations in flow situation in the inner cigarette combustion process in the dynamic change of the inner cigarette of burning.
3, measuring the dynamic temperature of combustion equipment of inner cigarette is fit to and the supporting use of single hole road smoking machine.
4, the equipment that uses this invention to provide is quick on the draw to temperature variation, and according to the various combination of temperature-sensing probe, can measure that cigarette glows and aspiration procedure in dynamic shaft motive stream temperature, any time the arbitrfary point temperature, and the temperature of each point of burning awl.The whole combustion process of cigarette is carried out dynamic temperature measurement, and the mensuration of cigarette burning temperature helps to make up reducing cigarette tar and reducing, falls the screening platform of CO adjuvant, and the detection platform of cigarette supplementary quality improvement provides the technical support platform to the development of Chinese style cigarette.
Claims (5)
1. dynamic temperature inner cigarette measuring equipment, comprise temperature drip catcher (1), temperature-sensing probe, signal processor (4), first analog to digital conversion circuit (18) and second analog to digital conversion circuit (28) and control computer (9), it is characterized in that: wherein be installed in fixedly temperature-sensing probe (2) and movable temperature-sensing probe (7) on the temperature drip catcher (1), first analog to digital conversion circuit (18) input signal processor (4) of its output signal in temperature drip catcher (1) carries out signal Processing, is transferred to control computer (9) through second analog to digital conversion circuit (28) again; All temperature-sensing probes form by platinum filament (5) and the electric connection of platinum-rhodium wire (6) one ends; described platinum filament (5) and platinum-rhodium wire (6) surface applied high-temperature resistant membrane insulating coating (10); the postmedian of described fixedly temperature-sensing probe is provided with protection porcelain tube (3); the middle part of described movable temperature-sensing probe is provided with flexible high-temperature insulation sheath (11), and the rear portion is provided with protection porcelain tube (3).
2. dynamic temperature inner cigarette measuring equipment as claimed in claim 1 is characterized in that: described high-temperature insulating paint is the high-temperature insulation coating of ceramic-like, compound resin class or organo-fluorine polymer class.
3. dynamic temperature inner cigarette measuring equipment as claimed in claim 1 is characterized in that: described fixedly temperature-sensing probe (2) is 3-15, and movable temperature-sensing probe (7) is 2.
4. dynamic temperature inner cigarette measuring equipment as claimed in claim 1 is characterized in that: described fixedly temperature-sensing probe (2) is 8-10, and movable temperature-sensing probe (7) is 2.
5. dynamic temperature inner cigarette measuring equipment as claimed in claim 1 is characterized in that: described fixedly temperature-sensing probe (2) is 10, and movable temperature-sensing probe (7) is 2.
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| CNB2006100109264A CN100405032C (en) | 2006-05-29 | 2006-05-29 | Film-insulated temperature-sensing probe and its use for determining internaltemperature at cigarette burning |
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| CNB2006100109264A CN100405032C (en) | 2006-05-29 | 2006-05-29 | Film-insulated temperature-sensing probe and its use for determining internaltemperature at cigarette burning |
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| CN100405032C true CN100405032C (en) | 2008-07-23 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101922979B (en) * | 2009-06-15 | 2013-01-23 | 湖北中烟工业有限责任公司 | Device and method for measuring gas phase temperature of a cigarette combustion cone |
| CN102062650B (en) * | 2010-11-30 | 2012-02-15 | 中国烟草总公司郑州烟草研究院 | Device for manufacturing cigarette burning and smoking temperature distribution detection component |
| CN102109393B (en) * | 2010-11-30 | 2012-05-23 | 中国烟草总公司郑州烟草研究院 | Cigarette ignition temperature distribution detector and automatic control method thereof |
| CN102103025B (en) * | 2010-11-30 | 2012-06-27 | 中国烟草总公司郑州烟草研究院 | Data acquisition and control method and system for cigarette smoking temperature distribution detection |
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| CN2039018U (en) * | 1988-11-11 | 1989-06-07 | 北京理工大学 | Thin film temp. sensor |
| CN1158416A (en) * | 1995-10-30 | 1997-09-03 | 赫罗伊斯传感器有限公司 | Resistance thermometer |
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| CN2039018U (en) * | 1988-11-11 | 1989-06-07 | 北京理工大学 | Thin film temp. sensor |
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Application publication date: 20061025 Assignee: Yunnan Tongchuang Inspection Technology Co., Ltd. Assignor: Yunnan Reascend Tobacco Technology (Group) Co., Ltd. Contract record no.: 2014530000092 Denomination of invention: Film-insulated temperature-sensing probe and its use for determining internaltemperature at cigarette burning Granted publication date: 20080723 License type: Exclusive License Record date: 20140707 |
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